(function (f) { if (typeof exports === "object" && typeof module !== "undefined") { module.exports = f() } else if (typeof define === "function" && define.amd) { define([], f) } else { var g; if (typeof window !== "undefined") { g = window } else if (typeof global !== "undefined") { g = global } else if (typeof self !== "undefined") { g = self } else { g = this } g = (g.d3 || (g.d3 = {})); g = (g.layout || (g.layout = {})); g.cloud = f() } })(function () {
  var define, module, exports; return (function e(t, n, r) { function s(o, u) { if (!n[o]) { if (!t[o]) { var a = typeof require == "function" && require; if (!u && a) return a(o, !0); if (i) return i(o, !0); var f = new Error("Cannot find module '" + o + "'"); throw f.code = "MODULE_NOT_FOUND", f } var l = n[o] = { exports: {} }; t[o][0].call(l.exports, function (e) { var n = t[o][1][e]; return s(n ? n : e) }, l, l.exports, e, t, n, r) } return n[o].exports } var i = typeof require == "function" && require; for (var o = 0; o < r.length; o++)s(r[o]); return s })({
    1: [function (require, module, exports) {
      // Word cloud layout by Jason Davies, https://www.jasondavies.com/wordcloud/
      // Algorithm due to Jonathan Feinberg, http://static.mrfeinberg.com/bv_ch03.pdf

      var dispatch = require("d3-dispatch").dispatch;

      var cloudRadians = Math.PI / 180,
        cw = 1 << 11 >> 5,
        ch = 1 << 11;

      module.exports = function () {
        var size = [256, 256],
          text = cloudText,
          font = cloudFont,
          fontSize = cloudFontSize,
          fontStyle = cloudFontNormal,
          fontWeight = cloudFontNormal,
          rotate = cloudRotate,
          padding = cloudPadding,
          spiral = archimedeanSpiral,
          words = [],
          timeInterval = Infinity,
          event = dispatch("word", "end"),
          timer = null,
          random = Math.random,
          cloud = {},
          canvas = cloudCanvas;

        cloud.canvas = function (_) {
          return arguments.length ? (canvas = functor(_), cloud) : canvas;
        };

        cloud.start = function () {
          var contextAndRatio = getContext(canvas()),
            board = zeroArray((size[0] >> 5) * size[1]),
            bounds = null,
            n = words.length,
            i = -1,
            tags = [],
            data = words.map(function (d, i) {
              d.text = text.call(this, d, i);
              d.font = font.call(this, d, i);
              d.style = fontStyle.call(this, d, i);
              d.weight = fontWeight.call(this, d, i);
              d.rotate = rotate.call(this, d, i);
              d.size = ~~fontSize.call(this, d, i);
              d.padding = padding.call(this, d, i);
              return d;
            }).sort(function (a, b) { return b.size - a.size; });

          if (timer) clearInterval(timer);
          timer = setInterval(step, 0);
          step();

          return cloud;

          function step() {
            var start = Date.now();
            while (Date.now() - start < timeInterval && ++i < n && timer) {
              var d = data[i];
              d.x = (size[0] * (random() + .5)) >> 1;
              d.y = (size[1] * (random() + .5)) >> 1;
              cloudSprite(contextAndRatio, d, data, i);
              if (d.hasText && place(board, d, bounds)) {
                tags.push(d);
                event.call("word", cloud, d);
                if (bounds) cloudBounds(bounds, d);
                else bounds = [{ x: d.x + d.x0, y: d.y + d.y0 }, { x: d.x + d.x1, y: d.y + d.y1 }];
                // Temporary hack
                d.x -= size[0] >> 1;
                d.y -= size[1] >> 1;
              }
            }
            if (i >= n) {
              cloud.stop();
              event.call("end", cloud, tags, bounds);
            }
          }
        }

        cloud.stop = function () {
          if (timer) {
            clearInterval(timer);
            timer = null;
          }
          return cloud;
        };

        function getContext(canvas) {
          canvas.width = canvas.height = 1;
          var ratio = Math.sqrt(canvas.getContext("2d").getImageData(0, 0, 1, 1).data.length >> 2);
          canvas.width = (cw << 5) / ratio;
          canvas.height = ch / ratio;

          var context = canvas.getContext("2d");
          context.fillStyle = context.strokeStyle = "red";
          context.textAlign = "center";

          return { context: context, ratio: ratio };
        }

        function place(board, tag, bounds) {
          var perimeter = [{ x: 0, y: 0 }, { x: size[0], y: size[1] }],
            startX = tag.x,
            startY = tag.y,
            maxDelta = Math.sqrt(size[0] * size[0] + size[1] * size[1]),
            s = spiral(size),
            dt = random() < .5 ? 1 : -1,
            t = -dt,
            dxdy,
            dx,
            dy;

          while (dxdy = s(t += dt)) {
            dx = ~~dxdy[0];
            dy = ~~dxdy[1];

            if (Math.min(Math.abs(dx), Math.abs(dy)) >= maxDelta) break;

            tag.x = startX + dx;
            tag.y = startY + dy;

            if (tag.x + tag.x0 < 0 || tag.y + tag.y0 < 0 ||
              tag.x + tag.x1 > size[0] || tag.y + tag.y1 > size[1]) continue;
            // TODO only check for collisions within current bounds.
            if (!bounds || !cloudCollide(tag, board, size[0])) {
              if (!bounds || collideRects(tag, bounds)) {
                var sprite = tag.sprite,
                  w = tag.width >> 5,
                  sw = size[0] >> 5,
                  lx = tag.x - (w << 4),
                  sx = lx & 0x7f,
                  msx = 32 - sx,
                  h = tag.y1 - tag.y0,
                  x = (tag.y + tag.y0) * sw + (lx >> 5),
                  last;
                for (var j = 0; j < h; j++) {
                  last = 0;
                  for (var i = 0; i <= w; i++) {
                    board[x + i] |= (last << msx) | (i < w ? (last = sprite[j * w + i]) >>> sx : 0);
                  }
                  x += sw;
                }
                delete tag.sprite;
                return true;
              }
            }
          }
          return false;
        }

        cloud.timeInterval = function (_) {
          return arguments.length ? (timeInterval = _ == null ? Infinity : _, cloud) : timeInterval;
        };

        cloud.words = function (_) {
          return arguments.length ? (words = _, cloud) : words;
        };

        cloud.size = function (_) {
          return arguments.length ? (size = [+_[0], +_[1]], cloud) : size;
        };

        cloud.font = function (_) {
          return arguments.length ? (font = functor(_), cloud) : font;
        };

        cloud.fontStyle = function (_) {
          return arguments.length ? (fontStyle = functor(_), cloud) : fontStyle;
        };

        cloud.fontWeight = function (_) {
          return arguments.length ? (fontWeight = functor(_), cloud) : fontWeight;
        };

        cloud.rotate = function (_) {
          return arguments.length ? (rotate = functor(_), cloud) : rotate;
        };

        cloud.text = function (_) {
          return arguments.length ? (text = functor(_), cloud) : text;
        };

        cloud.spiral = function (_) {
          return arguments.length ? (spiral = spirals[_] || _, cloud) : spiral;
        };

        cloud.fontSize = function (_) {
          return arguments.length ? (fontSize = functor(_), cloud) : fontSize;
        };

        cloud.padding = function (_) {
          return arguments.length ? (padding = functor(_), cloud) : padding;
        };

        cloud.random = function (_) {
          return arguments.length ? (random = _, cloud) : random;
        };

        cloud.on = function () {
          var value = event.on.apply(event, arguments);
          return value === event ? cloud : value;
        };

        return cloud;
      };

      function cloudText(d) {
        return d.text;
      }

      function cloudFont() {
        return "serif";
      }

      function cloudFontNormal() {
        return "normal";
      }

      function cloudFontSize(d) {
        return Math.sqrt(d.value);
      }

      function cloudRotate() {
        return (~~(Math.random() * 6) - 3) * 30;
      }

      function cloudPadding() {
        return 1;
      }

      // Fetches a monochrome sprite bitmap for the specified text.
      // Load in batches for speed.
      function cloudSprite(contextAndRatio, d, data, di) {
        if (d.sprite) return;
        var c = contextAndRatio.context,
          ratio = contextAndRatio.ratio;

        c.clearRect(0, 0, (cw << 5) / ratio, ch / ratio);
        var x = 0,
          y = 0,
          maxh = 0,
          n = data.length;
        --di;
        while (++di < n) {
          d = data[di];
          c.save();
          c.font = d.style + " " + d.weight + " " + ~~((d.size + 1) / ratio) + "px " + d.font;
          var w = c.measureText(d.text + "m").width * ratio,
            h = d.size << 1;
          if (d.rotate) {
            var sr = Math.sin(d.rotate * cloudRadians),
              cr = Math.cos(d.rotate * cloudRadians),
              wcr = w * cr,
              wsr = w * sr,
              hcr = h * cr,
              hsr = h * sr;
            w = (Math.max(Math.abs(wcr + hsr), Math.abs(wcr - hsr)) + 0x1f) >> 5 << 5;
            h = ~~Math.max(Math.abs(wsr + hcr), Math.abs(wsr - hcr));
          } else {
            w = (w + 0x1f) >> 5 << 5;
          }
          if (h > maxh) maxh = h;
          if (x + w >= (cw << 5)) {
            x = 0;
            y += maxh;
            maxh = 0;
          }
          if (y + h >= ch) break;
          c.translate((x + (w >> 1)) / ratio, (y + (h >> 1)) / ratio);
          if (d.rotate) c.rotate(d.rotate * cloudRadians);
          c.fillText(d.text, 0, 0);
          if (d.padding) c.lineWidth = 2 * d.padding, c.strokeText(d.text, 0, 0);
          c.restore();
          d.width = w;
          d.height = h;
          d.xoff = x;
          d.yoff = y;
          d.x1 = w >> 1;
          d.y1 = h >> 1;
          d.x0 = -d.x1;
          d.y0 = -d.y1;
          d.hasText = true;
          x += w;
        }
        var pixels = c.getImageData(0, 0, (cw << 5) / ratio, ch / ratio).data,
          sprite = [];
        while (--di >= 0) {
          d = data[di];
          if (!d.hasText) continue;
          var w = d.width,
            w32 = w >> 5,
            h = d.y1 - d.y0;
          // Zero the buffer
          for (var i = 0; i < h * w32; i++) sprite[i] = 0;
          x = d.xoff;
          if (x == null) return;
          y = d.yoff;
          var seen = 0,
            seenRow = -1;
          for (var j = 0; j < h; j++) {
            for (var i = 0; i < w; i++) {
              var k = w32 * j + (i >> 5),
                m = pixels[((y + j) * (cw << 5) + (x + i)) << 2] ? 1 << (31 - (i % 32)) : 0;
              sprite[k] |= m;
              seen |= m;
            }
            if (seen) seenRow = j;
            else {
              d.y0++;
              h--;
              j--;
              y++;
            }
          }
          d.y1 = d.y0 + seenRow;
          d.sprite = sprite.slice(0, (d.y1 - d.y0) * w32);
        }
      }

      // Use mask-based collision detection.
      function cloudCollide(tag, board, sw) {
        sw >>= 5;
        var sprite = tag.sprite,
          w = tag.width >> 5,
          lx = tag.x - (w << 4),
          sx = lx & 0x7f,
          msx = 32 - sx,
          h = tag.y1 - tag.y0,
          x = (tag.y + tag.y0) * sw + (lx >> 5),
          last;
        for (var j = 0; j < h; j++) {
          last = 0;
          for (var i = 0; i <= w; i++) {
            if (((last << msx) | (i < w ? (last = sprite[j * w + i]) >>> sx : 0))
              & board[x + i]) return true;
          }
          x += sw;
        }
        return false;
      }

      function cloudBounds(bounds, d) {
        var b0 = bounds[0],
          b1 = bounds[1];
        if (d.x + d.x0 < b0.x) b0.x = d.x + d.x0;
        if (d.y + d.y0 < b0.y) b0.y = d.y + d.y0;
        if (d.x + d.x1 > b1.x) b1.x = d.x + d.x1;
        if (d.y + d.y1 > b1.y) b1.y = d.y + d.y1;
      }

      function collideRects(a, b) {
        return a.x + a.x1 > b[0].x && a.x + a.x0 < b[1].x && a.y + a.y1 > b[0].y && a.y + a.y0 < b[1].y;
      }

      function archimedeanSpiral(size) {
        var e = size[0] / size[1];
        return function (t) {
          return [e * (t *= .1) * Math.cos(t), t * Math.sin(t)];
        };
      }

      function rectangularSpiral(size) {
        var dy = 4,
          dx = dy * size[0] / size[1],
          x = 0,
          y = 0;
        return function (t) {
          var sign = t < 0 ? -1 : 1;
          // See triangular numbers: T_n = n * (n + 1) / 2.
          switch ((Math.sqrt(1 + 4 * sign * t) - sign) & 3) {
            case 0: x += dx; break;
            case 1: y += dy; break;
            case 2: x -= dx; break;
            default: y -= dy; break;
          }
          return [x, y];
        };
      }

      // TODO reuse arrays?
      function zeroArray(n) {
        var a = [],
          i = -1;
        while (++i < n) a[i] = 0;
        return a;
      }

      function cloudCanvas() {
        return document.createElement("canvas");
      }

      function functor(d) {
        return typeof d === "function" ? d : function () { return d; };
      }

      var spirals = {
        archimedean: archimedeanSpiral,
        rectangular: rectangularSpiral
      };

    }, { "d3-dispatch": 2 }], 2: [function (require, module, exports) {
      // https://d3js.org/d3-dispatch/ Version 1.0.3. Copyright 2017 Mike Bostock.
      (function (global, factory) {
        typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
          typeof define === 'function' && define.amd ? define(['exports'], factory) :
            (factory((global.d3 = global.d3 || {})));
      }(this, (function (exports) {
        'use strict';

        var noop = { value: function () { } };

        function dispatch() {
          for (var i = 0, n = arguments.length, _ = {}, t; i < n; ++i) {
            if (!(t = arguments[i] + "") || (t in _)) throw new Error("illegal type: " + t);
            _[t] = [];
          }
          return new Dispatch(_);
        }

        function Dispatch(_) {
          this._ = _;
        }

        function parseTypenames(typenames, types) {
          return typenames.trim().split(/^|\s+/).map(function (t) {
            var name = "", i = t.indexOf(".");
            if (i >= 0) name = t.slice(i + 1), t = t.slice(0, i);
            if (t && !types.hasOwnProperty(t)) throw new Error("unknown type: " + t);
            return { type: t, name: name };
          });
        }

        Dispatch.prototype = dispatch.prototype = {
          constructor: Dispatch,
          on: function (typename, callback) {
            var _ = this._,
              T = parseTypenames(typename + "", _),
              t,
              i = -1,
              n = T.length;

            // If no callback was specified, return the callback of the given type and name.
            if (arguments.length < 2) {
              while (++i < n) if ((t = (typename = T[i]).type) && (t = get(_[t], typename.name))) return t;
              return;
            }

            // If a type was specified, set the callback for the given type and name.
            // Otherwise, if a null callback was specified, remove callbacks of the given name.
            if (callback != null && typeof callback !== "function") throw new Error("invalid callback: " + callback);
            while (++i < n) {
              if (t = (typename = T[i]).type) _[t] = set(_[t], typename.name, callback);
              else if (callback == null) for (t in _) _[t] = set(_[t], typename.name, null);
            }

            return this;
          },
          copy: function () {
            var copy = {}, _ = this._;
            for (var t in _) copy[t] = _[t].slice();
            return new Dispatch(copy);
          },
          call: function (type, that) {
            if ((n = arguments.length - 2) > 0) for (var args = new Array(n), i = 0, n, t; i < n; ++i) args[i] = arguments[i + 2];
            if (!this._.hasOwnProperty(type)) throw new Error("unknown type: " + type);
            for (t = this._[type], i = 0, n = t.length; i < n; ++i) t[i].value.apply(that, args);
          },
          apply: function (type, that, args) {
            if (!this._.hasOwnProperty(type)) throw new Error("unknown type: " + type);
            for (var t = this._[type], i = 0, n = t.length; i < n; ++i) t[i].value.apply(that, args);
          }
        };

        function get(type, name) {
          for (var i = 0, n = type.length, c; i < n; ++i) {
            if ((c = type[i]).name === name) {
              return c.value;
            }
          }
        }

        function set(type, name, callback) {
          for (var i = 0, n = type.length; i < n; ++i) {
            if (type[i].name === name) {
              type[i] = noop, type = type.slice(0, i).concat(type.slice(i + 1));
              break;
            }
          }
          if (callback != null) type.push({ name: name, value: callback });
          return type;
        }

        exports.dispatch = dispatch;

        Object.defineProperty(exports, '__esModule', { value: true });

      })));

    }, {}]
  }, {}, [1])(1)
});